Hi,This scanner didn't appeared on http://www.sane-project.org/sane-mfgs.html since my last mail, do I have something else to do ?I have seen that in genesys_devices.c, there is some model specific properties, so I think that I had no chance to get it work with the ubuntu tutorial (edition of /etc/sane.d/dll.conf and /etc/sane.d/genesys.conf).I have seen in mailing list archive that Plustek offered some helps to develop sane backends, but no news since then.Â Â [1]Â http://lists.alioth.debian.org/pipermail/sane-devel/2016-November/034854.htmlÂ Â [2] http://lists.alioth.debian.org/pipermail/sane-devel/2016-November/034872.htmlDoes the genesys sane back-end development is stopped until some news from Plustek ?In the thread, Gerhard JÃ€ger said thatin the good old days I did a similar thing for the Plustek backend.In fact I had an NDA and the allowance to use their code - in factWindoze driver code. http://lists.alioth.debian.org/pipermail/sane-devel/2016-November/034865.html

Do I have any chance to achieve to find the good values for genesys_devices.c ? Is it sufficient for enabling support for this scanner ?I have some programming skills, but mainly in java, however, C doesn't afraid me too much. Linux shell is ok.Where do I have to start ?Â - Decompilation ? I have done some decompilation in java, but never in C, what (affordable) software can I use ? (IDA is a bit expensive).Â - USB sniffing ? Same question, what software do you advise ?Â - Other ?Thank'sQuentin B.

I use Ubuntu 16.10 with sane-backends Version: 1.0.25+git20150528-1ubuntu2

sane-genesys man page say that GL843 is supported (http://manpages.ubuntu.com/manpages/yakkety/man5/sane-genesys.5.html )So I tried to add support for it by following those basics steps :https://help.ubuntu.com/community/SANE%20-%20Installing%20a%20scanner%20that%20isn%27t%20auto-detected

That doesn't helped.

This command may give interesting infos :

$ SANE_DEBUG_GENESYS=255 scanimage -L[genesys] attach: vendor 1971 product 3103 is not supported by this backend1971 and 3103 are decimal values of vendor and product ids .

No scanners were identified. If you were expecting something different,check that the scanner is plugged in, turned on and detected by thesane-find-scanner tool (if appropriate). Please read the documentationwhich came with this software (README, FAQ, manpages).[genesys] sane_genesys_exit start[genesys] sane_genesys_exit completed

Â # sane-find-scanner will now attempt to detect your scanner. If theÂ # result is different from what you expected, first make sure yourÂ # scanner is powered up and properly connected to your computer.

<trying to find out which USB chip is used>Â Â checking for LM983[1,2,3] ...Â Â this is not a LM983x (bcdUSB = 0x200)Â Â checking for GT-6801 ...Â Â this is not a GT-6801 (bcdUSB = 0x200)Â Â checking for GT-6816 ...Â Â this is not a GT-6816 (bDeviceClass = 255, bInterfaceClass = 255)Â Â checking for GLxxx ...Â Â this is not a GL646 (bDeviceClass = 255, bInterfaceClass = 255)<This USB chip looks like a GL843 (result from sane-backends 1.0.25git)>